Re: "Dead loop on virtual device" error without softirq-BKL on PREEMPT_RT

On 2026-02-17 20:10:09 [+0100], Bert Karwatzki wrote:

I tried to research the original commit which introduced the xmit_lock_owner check, but
it is present since linux 2.3.6 (released 19990610) (when __dev_queue_xmit() was still called dev_queue_xmit()),
so I can't tell the original idea behind that check (perhaps recuesion detection ...), so I'm
not completely sure if it can be omitted (and just let dev_xmit_recursion() do the recursion checking).

Okay. Thank you. I add it to my list.

Bert Karwatzki

Sebastian